Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb47729c0bdae18…

MALICIOUS

PDF

134.0 KB Created: 2021-08-01 06:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 96abf00c9283f1767c8ccb1fe112245a SHA-1: f4a3d3f16027f6399d41bc08a952408826b7bb9b SHA-256: 2eb47729c0bdae18e5366fb83275624a331438e68d229d25d4dd403b57deb58c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan. The heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress sites, and it contains a callback lure suggesting a phishing or tech-support scam. While no scripts were extracted, the presence of numerous external links and the callback lure strongly suggest an attempt to deceive the user into initiating contact with a malicious entity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://drafthe.ru/uplcv?utm_term=hopedale+la+fishing+forecast PDF link annotation
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c09e585f1f5---95714308926.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/cbf686e0f8a48aa104ff79b00e6874ec/nibokoxokomevu.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094ae2dead55---fatizebefuwuzapis.pdfIn PDF document text
    • http://lmleadmanagement.com/userfiles/files/55749807815.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb54e38cb3---tigijoxedarogek.pdfIn PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/23cf4325fa7d99f6c074705cd1832200/5894043665.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/cbe1307963db3c0b9f9c45cd53018503/xudepakewopomalonavat.pdfIn PDF document text
    • http://synphabase.ch/upload/file/12062707679.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/a40e583a5222b77b54ef946501b665fe/14939738122.pdfIn PDF document text
    • http://alaskacounseling.org/clients/8/87/870ae3779d21e956d596131c1dd113ff/File/37161597728.pdfIn PDF document text
    • https://bharatbiodiesel.com/userfiles/file/wakimigodufudobizep.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608a03c027003---belovalir.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfda1b05891---20995073932.pdfIn PDF document text
    • https://toppelletmachine.com/d/files/xewofomonetakevubejasim.pdfIn PDF document text
    • https://florerialafloresta.com/ckfinder/userfiles/files/87212348199.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/429900c7f9556641c8b70bda830c6cbc/wepupomifinevamavekori.pdfIn PDF document text
    • http://libron.pl/fckupload/assets/file/49609611470.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd88dd6b39f---zenajakewijifaranupirudiv.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/293dc3b488aef1e5c1a4493c59248560/gesekukojilekapu.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/kezizudoguwi.pdfIn PDF document text
    • https://namdolove.com/FileData/ckfinder/files/20210704_1F3C13A6A7AC22F4.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/lh591nods8vtaoq29jb1jl0cp9/fojakokafiwida.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ab0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AB0A 17212 bytes
SHA-256: 7605b46d4309a2eb7481a1210bc063570150161c6870cf69bda03b09d1ed7efc
font_01_sfnt_off0001d84b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D84B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001f062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F062 10892 bytes
SHA-256: 7e456ce2d07be41b6e8615d5b1d361abbb289f219568895a3fd55f510c816773

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